1. The problem asks to identify the types of angles marked in three diagrams involving two parallel lines and a transversal. 2. Important angle types when a transversal crosses parallel lines: - Corresponding angles: angles in the same relative position at each intersection. - Vertically opposite angles: angles opposite each other at the intersection of two lines. - Alternate angles: angles on opposite sides of the transversal but inside the parallel lines. 3. Analyze each diagram: (a) Two orange shaded angles are vertically opposite at the intersection of the transversal and one of the parallel lines. (b) Two pink shaded angles are on the same side of the transversal and above the top parallel line, so they are corresponding angles. (c) Two green shaded angles are on opposite sides of the transversal and on opposite parallel lines, so they are alternate angles. Final answers: (a) Vertically opposite angles (b) Corresponding angles (c) Alternate angles